With regards to the proposed "replacement of roof" at Jurong East MRT Station, recently there are a few renders at another forum showing the entire station being incorporated into a building.

In my opinion, for that to happen, Jurong East MRT Station must close for a few years, around 2 to 5 years, for the station to be rebuilt into a station within a building.

If this were to happen, definitely the NSL has to skip Jurong East, and cut short at Bukit Batok, and then turn back at Bukit Batok to run back to Marina South Pier, making the NSL run between Marina South Pier and Bukit Batok only,

Whereas EWL would skip Jurong East when running between Pasir Ris and Tuas Link,

During the period when Jurong East MRT Station is closed for rebuilding.

Those living in Bukit Batok, Bukit Gombak, Choa Chu Kang and Yew Tee, are you okay with this arrangement?

Meanwhile, Jurong East Bus Interchange would be without a MRT station for a while. But with the bus connections already established, let's just leave it as it is, and ignore the potential low usage of the bus interchange during this period, because of the MRT station closure.

No wonder the replacement Jurong East Temporary Bus Interchange can be located a distance away from the MRT station, which is less accessible to the MRT station than the current temporary bus interchange and the original bus interchange.

The closure of Jurong East MRT Station is imminent, and we should look forward to it.

Probably in 2021, when the Thomson East Coast Line opens to Gardens by the bay, and NSL commuters living along the TEL would be encouraged to switch to the TEL, to make room for the NSL to accommodate the passenger loading from Bukit Batok, Bukit Batok, Choa Chu Kang, Yew Tee, using the entire section of the NSL during that period.

2021 to 2027; 6 years. Should be enough to replace the station with a station within a building.

And might as well use this opportunity to rename Jurong East station to "Jurong", to make it align to "Tampines" and "Woodlands", which are all regional centres.

.....

But honestly, is Singapore really that land scarce that an existing elevated MRT station must be incorporated into a building?

Also, considering the roof is synonymous to everyone as the identity of Jurong East MRT Station, why not just let the JRL Jurong East MRT station incorporate the same iconic roof as the NSEWL station, and possibly join the two roofs together even if there is a gap between the two stations (NSEWL station and JRL station)?

The JRL station can be integrated with a bus interchange below. No problem. Likewise, the proposed LTA-MOT HQ can be build above the bus interchange, beside the JRL station, at the same site. Also no problem.

(Otherwise, forget it. Can always build the LTA-MOT HQ at another location that is lower in value, which is probably their intention, yet still beside a MRT station, such as Kallang MRT, Dover MRT, and Kembangan MRT.)

No need for the station to be incorporated into a building, change roof, or what not, which would cause inconvenience during the closure to the people traveling to and fro the area, and of course, affect the business at the commercial developments connected to Jurong East MRT Station.

Changing the roof, or rebuilding the station as part of a building, is a waste of money, and I'm definitely not supportive of it.